The heat comes from servers running on electricity. The electricity is made by burning non-renewable fossil fuel. Burning the fuel accelerates climate change, regardless of what happens to the heat after it is generated.
The data centers are a massive net add to the amount of electricity consumed. That is a massive net add to fossil fuel burned, which is a net add to climate change. Finding a use for a small fraction of the byproducts does not reduce the impact in a meaningful way.
It’s a distracting token gesture like recycling plastic. Yes, some tiny amount of plastic can genuinely be recycled/repurposed. But it’s a fart in a hurricane. It doesn’t make a dent in the massive amount of non-renewable waste.
Ron Dyck (npub1ywu…ft2d)